Pail cover for milking machines



' H. B. BABsoN PAIL COVER FOR MILKING MACHINES Filed may 2. 1925 maimedDer. 27, 1927.

CHINEICOMPANY, oFL CHICAGO, `I`r.r.r1vo1s,fa oonronATIoN "oFILLINoIsfvraincover.iron rrrnkrnefraacnmns. if, i i

` inventiorelates lto,milkfpailcovers, especially jfor ,milkingmachines, y and the Vgenerall object ofi the inyentitm istoA provide`Cofnyenient and e eiii'lci'ent'` means4 for `making 5 an lairftig'fhtconnection lutween the pail :and thecover. l `This',is.accomplished byvmeans of ak gasket, andwhile gasketshave beenem- 1` ployedforthispurposer heretofore `obis to improve'the yconstruction andmake lltfpossible'to @causethegasket tomaintain y itself on the lcover withoutthe, neethof grooyes y or recesses, which are objectionable in view ofthe diiculty of keeping `them clean and because of the cost ofmanufacture. Mysipu 1 yse is to provide a simple construction which ischea i to produce and easy to clean, and in whic it is easy to remove orreplace the gasket. Another object is to provide a construction such asto prolong the life of the gasket.

I accomplish my objects in the manner illustrated in the accompanyingdrawings in which y Figure 1 is a side elevation of a milk pail andcover embodying the invention.

e Figure 2 is a sectional elevation showing the cover, gasket and upperportion of the pail on an increased scale.

Figure 3 is similar to Figure 2 but shows 80A the cover alone. ,y

Figure 4 is an axial sectional view of the gasket. Figure 5 is a bottomplan view ofthe cover with the gasket in place. f

L`ke numerals denote like part-s throughout the several views.

According to the design illustrated, the pail has a body 10 with a riser12 at one point', the latter having a circular upper rim 4 14. In theform shown the body of the pail simulates an oblate spheroid, but itwill be understood that the configuration of the pail is immaterial solong as it has an opening of circular outline adapted to cooperate withthe gasket. The pail cover 16 is equipped with a pulsator 18 and nipples2O for connection to the teat cups 22. but these parts also may begreatly varied without omitting the essence of the invention.

Referring now more particularly to the novel characteristics, the pailcover, which is preferably of sheet metal. is slightly' crowned near theperiphery as indicated at 24 in Figures 2 and 3. At the periphery islCurated.y lnthfe planeA Of the. fgsket. l

downward and .inward thusy producing a; tapered orconical/inner.gsurface, and -the 1n-4 f;

A y The gasket 2S isshown v*separately in, Figurea. is usually, formedingwhole jon/111,: .part of rubber, lis annular. in outline-andrectangularin cross section,` therectangle being o 5 When ,the apartsare consurated-in .this manner andthe gasketA has v been p1acedin:;ypositionwithin .the -eOyerQthe yflanges 26:;tilt

thus causing it to be held up in contact with the under surface of thecover. In other words the gasket is sprung slightly out of shape and isenabled to securely hold its position on theunder side of the coverwithout the aid of any fastening devices. It remains snugly in position,and the resultis that the cover may be removed with the pail and thegasket will follow it. Thus the gasket is self-retaining in view of theshape of the rim of the cover, and yet the cover is quite free fromannular grooves or recesses of any kind.

When it is desired to clean the parts the gasket may be readily liftedout of the cover without stretching it or subjecting it to strain of anykind, and when it has been removed the pail will present a smooth andreadily accessible under surface which may be thoroughly washed withvery little eort.

According'to my construction the gasket is retained by pressure upon itsouter rim, whereas in many prior constructions the gasket had to hestretched before it could be snapped into the recess in which it seatedwhen in use. Rubber tends to deteriorate from contact with the milk, andthe deterioration is accelerated when it is necessary to stretch thegasket each time it is replaced or removed -inan annular groove. With myconstruction stretching is not necessary at any time, and the result isthat the life of the gasket is prolonged.

It will be observed that this invention does not call for any specialformation of gasket or pail, but makes use of a gasket of'ordinaryannular form and rectangular cross section. l.

Having thus described my invention what I claim-as new and desire tosecureby Letters Patent is:

1. In combination with a milk pail, a cover therefor having an annularelastic gasket adapted to be detachably connected to said cover, saidgasket being rectangular in cross section, said closure having a flangedwall in the form of a section of a cone whereby the engagement of thegasket with the inner surface of the cone, duev to the elasticity of thegasket, tends to maintain said gasket in iirm engagement Awith saidcover while permitting its free detachability for cleaning and otherpurposes.

2. A container closure having a peripheral flange extending, at such anangle to the top of the closure as to form the inner surface of a coneand an elastic gasket having its outer up er wall andil its adjacentside wall dispose at right angles with respect to each other, wherebysaid conical surface of the flange enga es said gasket and holds itfirmly to the un er side of'the cover while ermitting the freedetachability ofthe gas` Eet from the cover.

3. A cover of the character indicated, consisting of sheet metal and:formed withl a slightly crowned `portion at its periphery andterminatin in a depending Bange con-` verging inwardc-ly and downwardlyto roduce a tapered and" conical inner sur ace, the internal surface ofwhich flange is approximately at right angles to the adjacent crownedunder surface of the cover and an elastic annulus substantiallyrectangular 4'said cover and isy maintained` `d'tacl1abl)y connectedthereto. l In witness whereof, I haveheeunto `subscribed my name.

HENRY B; nABsoNL l

